Ring and finger gauge



Nov. 27, 1934. M. ENGELSMAN RING AND FINGER GAUGE Filed Nov. 16, 1953 INVEN 0 R: W

g will!!! TORNEY Patented Nov. 27, 1934 iii "UNITED STATES OFFICE,

1,981,911." a RING ANDFIN'GER GAUGE -Monroe Engelsman, New York, N. a ApplicationNovember 1s, 1933,. SerialNo.$98,215 zzolai p (01. 33-147 I .This invention relates to gauges, and has particular reference to devices such as ring. and

finger gauges. r One object of the invention is to provide a device of the character described which shall have improved indicating means, and improved means for actuating the same.

.Another object of the invention is to furnish a device of the type mentioned having relatively few and simple parts, which .can be rapidly as sembled and inexpensively manufactured, and which shall be free of backlash and highly accurate for taking measurements, and which shall be-durable, reliable, and'eflicient in use, convenient in operation, and adapted for measuring different kinds of articles or objects, s'uchas a finger, a ring, or a precious stone, and mounted and unmounted jewelry settings.

Other objects and advantages of the invention will become apparent as the specification proceeds.

With the aforesaid objects in view, the invention consists in the novelcombinations and arrangements of parts hereinafter described in their preferred embodiments, pointed out in' the subjoined claims, and illustrated in the annexed drawing, wherein like parts are designated by the same reference characters throughout the several views.

In the drawing:

Figure 1 is a plan view bodying the invention.

Fig. 2 is an edge view thereof.

Fig. 3 is a plan view of the device with the top plate removed, and parts broken away to show elements of construction.

showing a device em-' Fig. 4 is an enlarged sectional view-taken on thebroken line 4-4 of Fig. 3.

Fig. 5 isan enlarged sectional 'view taken on .line 55 of Fig. 1.

Fig.6. is an enlarged fragmentary plan view with parts removed and showing the gauge looked after being set according to different articles to be measured, shown in dot-dash lines.

Fig. '7 is a sectional view taken on line 7-7 of Fig. 3.

The advantages of the invention as here out- It will be obvious to those skilled in theart to which the invention appertains, that the same,

may be incorporated in several different constructions. The accompanying drawing, therefore, is submitted merely as showing the preferred exemplification of the invention.

Referring in detail to the drawing, 10 denotes a device such as a ring and finger gauge embodying the invention. The same may include a.

main "or. bottom plate 11 of plane form,- the outline ofwhich is clearly shown in Fig. 3, and

which conforms in 'general to theoutline of the top plate' '12, shown in Fig.1. The bottom plate may have a curvedend 13, and" may be provided with an integraljaw 14 at said end extending laterally in the plane of saidv plate. The jaw 14 may be the full thickness of the plate 11 and may have an inner concaved'face 15 for seating.

afinger F as hereinafter described. Theend portion of the jaw 14 may have a square gauge surface 16, extending from the concave surface 15, for seating a stone S, andan outer beveled or curved face or edge 17, with a shoulder or rest 18 at an end thereof, so that a ring R may be seated on the surface 17 in resting relation to the shoulder 18.

From the end or head portion '13, the plate 11 extends toward the right with parallel side edges l9 and '20,'-and may-have an opposite curved end21.

The headportionof ..the plate 11 may have a housing recess 22 therein having a curved wall 23, which at one end merges along a plane-sun face 24 into the curved seating face 15 of the jaw 14. At its opposite end, the curved surface 22 terminates at a plane surface 25 formed by a cut out or recess 26 whichialso affords an opposite plane surface 2'7. The recess 22, which thus communicates with the cut out 26, extends continuouslyup tothe plane wall 28, and an elongated guide recess 29 having opposite parallel plane walls 30, 31. .0f these, the wall 30 intersects thecut out wall 27, and the wall 31 intersects the wall '28. Hence it will be noted that the-housing IECBSSzDOltiOIlS 32, which as above .stated is in continuous communication with the recess '22, extends from the edge 23 0f the wall 11 up to the wall 30 and also communicates with the recess'29. It will be observed that the wall 30 is considerably longer than the wall 31,since the former extends to the cut out 26, and the latter to the recess 32.

It will .be understood that the opposite faces of the-wall;11 are plane, and. likewise that the bottom faces of the recesses.22, .26, 29 and 32 all lie. in a. plane, and that these planes are parallel to each. other.

Cooperating with the fixed jaw 14,.is a movable jaw 33 having gauge surfaces 15, 17, 18

. corresponding to those of the fixed jaw. Said jaw 33 may be formed as an integral portion of the slideback 34 from which the jaw extends laterally. The jaw 33 includes a finger piece 35 and theblock 34 is undercut along lines 36, 3'7 on oppositesfaces thereof, .so that'while the jaw and finger pieceare 0f the same. thickness as thedevice 10, including the cover plate 12, the slide block 34 is of a thickness equal to that of the depth of, the recess 32,, with the upper face,

of the slide block lying in the plane of the upper surface of the wall 11, the arrangement being best seen in Figs. 4 and 7. The slide block may extend into contact with the surface 30;: and the adjacent portion 33 thereof may be undercut at 39, so that a relatively thick bar or guide element 40 may be secured thereto by pins or rivets 41 with the guide element extending to the right.

The elongated guide element is received in the.

recess 29, and is longitudinally movable therealong with the side edges thereof in accurate sliding contact with the surfaces 30, 31. In this manner the movement of the block 34 and of the jaw 33 is accurately maintained.v

Projecting to the left from the slide block 34 and extending intothe housing recess 22 along" the bottom wall thereof is an arm 42 in the nature of a relatively thin plate. The slide block may be curved and. undercut at-43 adjacent to said arm, to provide a substantially circular space For actuating the dial 44 for rotation, the same may have a coaxial pinion 48 secured to theunderside thereof, and which also acts as a spacer between the dial and the bottom wall of the recess 22, and maintains the dialwith a, suitable clearance above the arm 42. On the upper face of the dial, a spacer disc 49 may be coaxially secured thereto to act between the dial and the cover plate 12.

For rotating the pinion 48, the arm 42 may have a rack'50 which may lie in the plane of the arm 42. This rack may beseparated from the arm 42 by an open ended slot 51, whose closed end is enlarged to afford a suitable resilient connection 52 between the end of the arm and the corresponding end of the rack. By this arrangement backlash is avoided, and it will be further noted that the pinion 48 is at the free end of the rack when the guide element: 40 is moved toward the left. In this position, in which the engagement between said element and the guide recess 29 is shortened, the maximum resilience of the rack mounting is available for preventing backlash.

In order to afford additional support for the slide block 34, so that the latter does' not depend wholly on the element 40, the arm 42 may have a guide slot 53 receiving a pin 54 fixed to the wall 11 of the device. The pin and slot may also function as a stop means to limit the movement of the slide block, although such motion may also be limited at the surfaces 16 and 28.

To look the gauge in a set position, a resilient shaped element 55 may be pivotally mounted in the cut out 26 on a pin 56 secured to the wall 11, and located adjacent to the dial 44 sothat a finger of the element is adapted to contact an edge of the dial.

piece being located in the cut out and projecting therefrom and being swingable from the unoperated position shown in Fig. 3 to the locking position of Fig. 6, in which an end of the finger piece presses against the other finger of the ele- At the opposite side of the element, a finger piece 57 is pivotally mounted on a pin 58 secured to the wall 11,,said finger.

ment to deform the latter and produce a resilient stop engagement with the dial.

The cover plate 12 may wholly overlie and conform -tothe shape of the wall 11, and may also havea jaw, portion 59 overlying the jaw 14, so

that the thickness of the final stationary jaw 60 is the same as that of the one piece movable jaw 33. The lower edge of the cover plate may afford a seat for the edge 36 of the movable jaw. The cover plate may have a millimeter scale 61 adapted to read with a mark 62 on the movable jaw. For the dial 44, the cover plate may have -a window 63'having a reference mark 64 to read with a U. S. standard gauge scale 65 on the scale.

The cover plate may also have U. S. standard and millimeter scales '66,- 6'7 respectively, arranged for readyconversion therebetween and extending along opposite edges of the plate.

The cover plate may be removably secured to the wall 11, as by screws at points such as 68.

It will be-noted thatan essential advantage of the invention is that the gauge reading is considerably multiplied by the dial and its actuating means, permitting more accurate meas-' urement. The finger surfaces 15 of the device may be arranged to indicate one size smaller than those at 17 to assure that the ring R. will have the required clearance on the finger. illll'wlll beappre'ciatedthat various changes and modifications may be made in the device as shown in the drawing, and that the same is submitted in an illustrative and not in a limiting sense, the scope of the invention being defined in the following claims.

I claim:

1. A gauge having an elongated plate having a straight guide recess extending into proximity to one end thereof, a housing recess at the second end of the plate in communication with the guide recess, said plate having a fixed jaw at said second end thereof, a complementary jaw, means movably supporting the latter including a bar movable alongthe guide recess, a dial rotatably mounted in the housing recess, a pinion coaxially secured to the dial, an arm fixed with respect to said movable jaw and movable therewith, a rack engaging the pinion and connected to said arm, the latter and the rack being movable into the housing-recess, and the rack and arm being interconnected at one end and being otherwise spaced from each other whereby the rack resiliently engages the pinion, the connection between the arm and rack being at the ends thereof adjacent to the second end of the plate.

2. A gauge including a main-plate and a cover plate, the main plate having a housing recess and an elongated guide recess extending therefrom, a guide bar in the guide recess, a fixed law on the main plate, a movable jaw complementary to the fixed jaw, means interconnecting said guide bar and the movable jaw for mounting the latter, said means being located in the housing recess, a rotary dial in the housing recess, actuator means for the dial located in the housing recess and connected to said means for operation thereby, the actuator means including a pinion and a rack meshing with each other, said means having a projecting arm for mounting the rack, said arm, said rack and said pinion underlying the dial, said arm having a guide slot, and a pin on the main plate engaged in the slot, said cover plate'closing said recesses and having a window opening for thedial.

7 MONROE ENGELSMAN. 

